Neighbor shoots couple dead, kills self

(supersedes)A man who shot two neighbors dead then barricaded himself in his apartment has committed suicide, Carabinieri police said Thursday.
    The killer had been arguing with the married couple and this could be the motive, investigators said.
    A man and a woman, both Italian, were found dead of gunshot wounds at the entrance to their ground-floor flat earlier in the day.
   

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